Increased firing of neurons in the posterior hypothalamus which precede classically conditioned pupillary dilations
Paralyzed cats were used as subjects in a classical conditioning experiment where each subject was exposed to 40 explicitly unpaired 1-s bursts of white noise and 0.5-s paw shocks. This training was followed by 60 trials of the two stimuli paired, where the white noise immediately preceded the paw s...
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| Veröffentlicht in: | Behavioural brain research 1996-10, Vol.80 (1), p.111-121 |
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| creator | Cassady, J.Michael |
| description | Paralyzed cats were used as subjects in a classical conditioning experiment where each subject was exposed to 40 explicitly unpaired 1-s bursts of white noise and 0.5-s paw shocks. This training was followed by 60 trials of the two stimuli paired, where the white noise immediately preceded the paw shock. Following this training, the subjects were re-exposed to 40 trials of the explicitly unpaired procedure. The pupil was monitored as the behavior and electrodes implanted in the thalamus, the dorsal hypothalamus and the posterior hypothalamus recorded the activity of clusters of cells. Only the cells in the posterior hypothalamus showed robust changes in firing rates that preceded the pupillary behavior,
both (a) on any particular trial and (b) as the learned association was being demonstrated behaviorally across trials. |
| doi_str_mv | 10.1016/0166-4328(96)00026-5 |
| format | Article |
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both (a) on any particular trial and (b) as the learned association was being demonstrated behaviorally across trials.</description><subject>Animals</subject><subject>Autonomic nervous system</subject><subject>Behavioral psychophysiology</subject><subject>Biological and medical sciences</subject><subject>Cats</subject><subject>Classical conditioning</subject><subject>Conditioned pupillary dilation</subject><subject>Conditioning, Classical - physiology</subject><subject>Dorsal hypothalamus</subject><subject>Electric Stimulation</subject><subject>Electrodes, Implanted</subject><subject>Electrophysiology</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. 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Psychology</topic><topic>Hypothalamus, Middle - physiology</topic><topic>Hypothalamus, Posterior - cytology</topic><topic>Hypothalamus, Posterior - physiology</topic><topic>Male</topic><topic>Neurons - physiology</topic><topic>Posterior hypothalamus</topic><topic>Proper controls</topic><topic>Psychology. Psychoanalysis. Psychiatry</topic><topic>Psychology. 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This training was followed by 60 trials of the two stimuli paired, where the white noise immediately preceded the paw shock. Following this training, the subjects were re-exposed to 40 trials of the explicitly unpaired procedure. The pupil was monitored as the behavior and electrodes implanted in the thalamus, the dorsal hypothalamus and the posterior hypothalamus recorded the activity of clusters of cells. Only the cells in the posterior hypothalamus showed robust changes in firing rates that preceded the pupillary behavior,
both (a) on any particular trial and (b) as the learned association was being demonstrated behaviorally across trials.</abstract><cop>Shannon</cop><pub>Elsevier B.V</pub><pmid>8905134</pmid><doi>10.1016/0166-4328(96)00026-5</doi><tpages>11</tpages></addata></record> |
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| ispartof | Behavioural brain research, 1996-10, Vol.80 (1), p.111-121 |
| issn | 0166-4328 1872-7549 |
| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Animals Autonomic nervous system Behavioral psychophysiology Biological and medical sciences Cats Classical conditioning Conditioned pupillary dilation Conditioning, Classical - physiology Dorsal hypothalamus Electric Stimulation Electrodes, Implanted Electrophysiology Female Fundamental and applied biological sciences. Psychology Hypothalamus, Middle - physiology Hypothalamus, Posterior - cytology Hypothalamus, Posterior - physiology Male Neurons - physiology Posterior hypothalamus Proper controls Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Pupil - physiology Thalamus Thalamus - cytology Thalamus - physiology |
| title | Increased firing of neurons in the posterior hypothalamus which precede classically conditioned pupillary dilations |
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